Dielectric properties and electrical behaviors of tunable Bi1.5MgNb1.5O7 thin films

Preparation and characterization of highly (222)-oriented bismuth magnesium niobate thin film by sol-gel method

“…These values are superior to that of bulk BMN ceramics and thin film with random orientations in Refs. [5,6,11]. It has demonstrated that the polarizability in bismuth based cubic pyrochlore is mainly contributed by the O′-A-O′ bends, which are oriented along the 〈111〉 direction, and the (222) preferred orientation could be a positive factor to the dielectric constant [12].…”

“…high dielectric constant, low loss, large dielectric nonlinearity [4,5]. To utilize the prominent characteristics of BMN in thin film devices, a lot of attempts have been made to produce BMN thin films [4][5][6][7]. Furthermore, previous works have demonstrated that the (222)-oriented BMN thin films have superior dielectric properties compared with the randomly oriented ones [6,7].…”

“…The Bi 1.5 MgNb 1.5 O 7 (BMN) thin film, as a typical cubic pyrochlore, earns special interest recently due to their excellent dielectric properties, i.e. high dielectric constant, low loss, large dielectric nonlinearity [4,5]. To utilize the prominent characteristics of BMN in thin film devices, a lot of attempts have been made to produce BMN thin films [4][5][6][7].…”

Effects of substrate on the crystalline structure and microwave dielectric properties of Bi1.5Mg1.0Nb1.5O7 sol–gel thin films

“…Up to now, a number of works on BMN thin films deposited on various substrates including ITO/glass, Si, and sapphire have been conducted [6][7][8][9][10]. However, most attentions were paid to the influences of deposition conditions on the properties of BMN thin films rather than to the substrate selection.…”

“…Bi 1.5 Mg 1.0 Nb 1.5 O 7 (BMN) thin films as the typical candidate are of recent special interest due to their relatively large tunability combine with very low dielectric loss [6][7][8]. Additionally, the BMN thin films exhibit an enhanced dielectric nonlinearity, which make the fabrication and operation of devices easily [6,9].…”